Heat transfer compositions
US8808570B2 · kind B2 · utility
4Cited by
19References
59Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 20, 2011 |
| Grant date | Aug 19, 2014 |
| Priority date | — |
| Expiry date | May 20, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49718
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention provides a heat transfer composition comprising (i) a first component selected from trans-1,3,3,3-tetrafluoropropene (R-1234ze(E)), cis-1,3,3,3-tetrafluoropropene (R-1234ze(Z)) and mixtures thereof; (ii) carbon dioxide (R-744); and (iii) a third component selected from propylene (R-1270), propane (R-290), n-butane (R-600), isobutane (R-600a), and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.